What do you think about this?

And how would you build one?

https://motoped.com/pro/

Might make a for an interesting woods bike for me. I'm light and sometimes find a full size motocross bike too long and awkward in the tight woods.

Thinking maybe a proper competition 125cc pit bike, 80cc MX parts bike for suspension, and mountain bike wheels/brakes, although I know nothing about mountain bikes.

Thoughts?

Looks badass.

Question: Why not just buy a 125cc 2 stroke moto?

Are you really going to pedal the heaviest mountain bike ever unless you HAVE to go down a trail that does not allow powered vehicles to get somewhere you can rip?

For that much money I think I would find something I don't have to pedal.

I love the looks and the concept. I think it would be fine for certain situations but a disappointment for others. If it were street legal it would make a great little commuter for city dwellers. Might make a good trail bike for flatlanders occasional use. I saw that about 5 years ago and saved the pictures. Don't know if it were available at the time though.

Wow, you guys totally don't get it.

My main race bike is a 125 motocross bike, and in the tight woods is too big (I'm 5'7"/145). I was considering a KTM 105 and will buy one if I can find one for the right price, but this is lighter, has smoother power and should hadle better. I don't want to buy one, I want to build one for under $1000.The pedals are only on that bike for some states that allow mopeds to be ridden on the street without registration/insurance.

I think its awesome, and if I had one I would ditch the pedals for pegs. This bike is tiny compared to a 125 motocross bike. Its made with bicycle parts, which are very expensive when bought individually. My thought to build one was buy a used downhill bike off of craigslist and rob the parts, build my own frame and throw a chinese copy of a honda trail engine on it. If you buy right you could probably pull it off for under 2000. P.S. Somebody else makes a really small bike like this, I'll have to consult google to remember the name.

Here it is http://www.fxbikes.com/

Not really sure what this moped offers over say an old Honda XR or CR 125. Those can be had for a grand in darn good shape. They are skinny, light weight and work real well.

No doubt you can combine one with a mountain bicycle. You could also put a hub motor and lipo battery on a mountain bike. While I might not consider such a thing particularly interesting or useful, if you do, go for it. Will the final package of a home made version be as nice as the premanufactured one? Probably not.

Personally, I find the electric bikes interesting as trail riding machines because of their low noise. I like slipping around quietly and seeing things that are normally spooked off by the noise of an engine. A very quiet electric (no whiny controller) seems like a darn nice thing to me.

Way too expensive for my budget and uses, but I do like these, this one in particular:
http://www.zeromotorcycles.com/zero-ds/

I did indeed miss the point. While it's an interesting idea I think I would rather find an Enduro chassis like a gas gas and figure out a nice seat solution. Short, lightweight, and stout.

Want a small bike, buy a Pitster Pro... I bought a lightly used LXR 160 for $900. It is a way better solution for a small trail bike.

I want a bike that's lightweight, shorter than a standard MX/woods bike, handles and has enough power to be competitive with. My thoughts are to start with a bike like a pitster pro, SSR, or one of the other competition pit bikes. They have powerful motors, typically a moly frame, and are built to be raced. Pick up a YZ/RM/KX/CR 80 parts bike and use the forks and most of the rear suspension with a fabbed/modded swingarm, and mountain bike wheels. I know nothing about mountain bikes, so I was hoping somebody would chime in with some ideas. Will it be better than the factory built bike like the one in the link? I would think so. The suspension would be better and it would be more purpose built for what I'm doing.

Bikes like the XR and CR Hondas don't work because they're too big and too heavy. Ditto for a Gasgas. I already have an Italian Husky which is equal to or better than a GG in the woods, and if I were to buy a dedicated woods bike, it would probably be a Beta.

If a 125cc dirt bike is too large for woods you want to ride in, then I don't see how a motorized mountain bike or moped will be small enough. Wheelbase and handlebar width are about the same, if not bigger, for the mountain bike and moped. Beware of specs of that moped you link, I think that listed weight is sans engine. For they list the engine choices separately.

You say you want to make your own for under a grand. That alone isn't going to be easy. Sure, you could take a trash can mountain bike and zip tie a lawnmower engine onto it. But it certainly isn't going to work well. A good quality mountain bike capable of handling being motorized isn't cheap. When you're done, I'm still not seeing how it's going to be any more nimble in the tight woods than a 125 or smaller dirt bike would.

Maybe I (and probably others) aren't really understanding what you want. Is it something to just putter through the woods on, or do you want to race it? And if so, you're the most knowledgeable about your sanctioning body rules regarding that.

Well, it does have a 6" shorter wheelbase than a mx bike (important), is 3" lower (not important) and is 65+ lbs lighter (very important), so that's kind of what I'm looking for.

Like I've said now for the third time, a competition pit bike (what the MP is based on) with bits from a 80/85 cc mx bike (more and better travel) and mountain bike wheels. I don't see an issue building that for ~$1k, and it being a better bike. FWIW, almost every woods guy I've spoken to says a smaller, more nimble bike is ALWAYS faster in the woods. I won the series two years ago and finished top three every other. Just trying to think outside the bun here and catch some people off guard.

I really thought I'd get some interesting input here. You guys are losing it.

I know and like what you are trying to accomplish but I question whether you can accomplish it with the 80cc mx bike suspension. You are going to want to use 26" bike wheels or bigger. Can the suspension handle a wheel/tire that big? Downhill bicycle front suspension is very sophisticated and lightweight. I would try to use that instead and custom fab something for the rear. Also heavy duty bicycle wheels are very expensive. If you are going to try and do this with huffy parts you are going to be disappointed.

Well at least that's some input. any reasonably modern MX bike will have suspension that's good enough for me in the woods. The rear will be far better than what the MP bike has. Seeing it's rear suspension makes me wonder if the front is any good. MX forks will be fine. Probably a little heavier, but definitely a lot stronger. Will a 24/26 wheel combo fit? Rear no problem. The front I still need to figure out, but there should be a way around that. As for wheels, I understand what you're saying and that's what I need to investigate. That's why I'm asking for some input. I know nothing about mountain bikes.

I'd go with one of these:

I like that Cleveland, using two front tires from a motorcycle would definately be stronger and more durable than bike tires. I wonder what it weighs? The cleveland should be a good model to follow for what you are planning to do.

Yes. Thanks for that link. Tey look interesting.

I think they're 158 lbs dry. Each machine has it's strengths, but the 21" wheels are a bonus on the CCW. Never thought of that.